English phrase ‘I am driving a car.’ can be translated into Russian with 2 phrases:
Я еду на машине. = I am going by a car. (The person can be a driver)
Я веду машину. = I am driving a car. (The person is a driver)

Cf: Be friendly and you will never want friends (Am). Friendship cannot stand all on one side (Am.). Friendship cannot stand on one side (Br.). One complimentary letter asks another (Br.), The best way to gain a friend is to be one (Am.). The way to have a friend is to be one (Br.)